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#4029· Seibu E851

Seibu Class E851

🇯🇵 Japan ·built by Mitsubishi Heavy Industries· from 1969· Japanese electric locomotive type

Seibu Class E851, photo 1 of 2
1/2 立体メガネ at Japanese Wikipedia· CC BY-SA 3.0

what is it?

The Class E851 (E851形) was a class of four DC electric locomotives operated by the private railway operator Seibu Railway in Japan between 1969 and 1996. Built in 1969 by Mitsubishi to haul 1,000-tonne cement trains, the design was based on the JNR Class EF65 and used bogies similar to those used on the JNR Class EF81 locomotives. From 30 November 1990, the discontinuation of freight services to Sayamagaoka eliminated the need for double-heading, and the end of all Seibu freight services from 7 March 1996 saw the E851s become surplus to requirements.

who runs it

base stats

  • power 2.6 MWpower output
  • built 4made in total

Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.

fun facts

  • First built 57 years ago, in 1969.
  • 2.6 MW is about 30 family cars (~85 kW each) flat out.

electric locomotive: Draws power from overhead wires or a third rail and pulls separate carriages.

spec sheet

built
1969
status
retired
number built
4
kind
Electric
traction
electric
origin
🇯🇵 Japan
builders
Mitsubishi Heavy Industries
operators
Seibu Railway
top speed
—
power
2.6 MW
gauge
1,067 mm Cape gauge
electric system
1,500 V DC
wheel arrangement
Bo-Bo-Bo
Dutch name
Seibu E851

From the Wikipedia infobox and Wikidata. Blank means the sources don't say.

Sources: Wikidata Q1286817, Wikipedia: Seibu Class E851 (CC BY-SA 4.0).Updated 2026-10-25.

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